Transactions of the Society of Naval Architects and Marine Engineers Volume 7 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1899 edition. Excerpt: ...that a 4-foot passage, whose floor forms the stiffening required, does not require so much room, after all. I regret not being able, through lack of time, to fully illustrate this paper by drawings showing how the various propositions made would be carried out. The cross-section through the boiler-room (Plate 31) shows the arrangement as I would propose to carry it out on a battleship such as the Ohio, now building by us (The Union Iron Works) for the U. S. Navy. I have shown, however, the ordinary cylindrical boiler, not because it lends itself better to the plan I desire to carry out, but that I simply desire it as an expression of my honest conviction as to the best type of boiler at present known for use on board ship, and also as being best adapted for simplicity of connections. I have no desire to bring any boiler discussion into this paper, as it appears, in the present stage of water-tube boiler development, to be quite impossible to get the most simple and well-known facts in regard to cylindrical boilers honestly considered in naval circles. For instance, in one of the best papers I have read, comparing two types of water-tube boilers with the cylindrical boiler, by Mr. F. T. Marshall, before the last meeting of the Institution of Naval Architects, he says, in regard to forced draught, that--"In the case of the cylindrical boilers, a four hours' run is probably as long as these boilers could be worked at the maximum forced draught power. These boilers have a tendency to suffer in the flame-box seams when long fire bars are used, and it is only by the use of these long bars that the high power looked for can be obtained. The tube ends also get choked up, especially if fitted with ferrules, and without ferrules the tubes have a great...